All of this data is courtesy of diligent research by Richard McCool:
Ferdinandus (ca 1635-1712) second son was also named Ferdinandus, born 1662 in Gravesend, Kings County, New Netherlands.He married Geertruy Minnes Johannes (1664- after 1744). She was the daughter ofMinne Johannes and Rensie Feddans.(You can see where your Rensche van Sicklen got her name: from grandmother Rensie).
I show that Ransche/Rensche married Johannes Gulick about 1722 and they removed to New Jersey before 1724.
Their son, Jochem Gulick, was born27 Sep 1724 in Somerset County, NJ and died in Kingston, Middlesex County, NJ on 26 Dec 1803.He married Rebecca Emans (04 Apr 1732-30 Apr 1809) on 30 Nov 1751. (Jochem is my 1st cousin, 7x removed.)